Convert CONFIG_CFB_CONSOLE_ANSI to Kconfig

This converts the following to Kconfig:
   CONFIG_CFB_CONSOLE_ANSI

Signed-off-by: Simon Glass <sjg@chromium.org>
Reviewed-by: Tom Rini <trini@konsulko.com>
diff --git a/configs/tbs2910_defconfig b/configs/tbs2910_defconfig
index 07c161e..87dce36 100644
--- a/configs/tbs2910_defconfig
+++ b/configs/tbs2910_defconfig
@@ -37,4 +37,5 @@
 CONFIG_G_DNL_MANUFACTURER="TBS"
 CONFIG_G_DNL_VENDOR_NUM=0x0525
 CONFIG_G_DNL_PRODUCT_NUM=0xa4a5
+CONFIG_CFB_CONSOLE_ANSI=y
 CONFIG_OF_LIBFDT=y